feat: Add slippage message to remove liqudity and remove signature permit logic

[memoyil]

---

PR-Codex overview

The focus of this PR is to update error messages, remove unused code related to signatures, and add slippage error handling during liquidity removal confirmation.

Detailed summary

• Updated error messages for confirming without approval
• Removed unused signature-related code
• Added slippage error handling during liquidity removal confirmation

The following files were skipped due to too many changes: apps/web/src/views/RemoveLiquidity/index.tsx

✨ Ask PR-Codex anything about this PR by commenting with /codex {your question}